To collect data in this study, a retrospective postal survey was sent to previously self-employed general practitioners in the Netherlands who had retired from their work as GPs before the age of 65, which is the statutory pensionable age in the Netherlands.
Permission from the Regional Ethics Committee of Vejle and Funen Counties was obtained (issued November 21, 2006; ref no. VF-20060090), and an invitation to participate in the study was sent to all 68 previously operated RTHA patients resident in Funen County, Denmark.
The questionnaire was sent to patients who had previously been referred to a community based exercise referral scheme because of a sedentary lifestyle and sought information on the quality of the service offered.
The invitation email containing a link to the questionnaire was sent to AHPs who had previously participated in the qualitative study conducted as part of the larger study and who had agreed to further contact from the researchers [ 32].
The previously developed postal questionnaire was sent to 240 physicians in Cyprus to add to the previously surveyed 1463 Greek physicians.
Jeremy Coller, the founder of Coller Capital, who was the behind the letter, which was sent last month but has not previously been made public, said: "These large food companies are key ingredients in the portfolios of most of our pensions and savings – thus it is a case of proper risk management to ask them to work out how they will meet this challenge.
A previously designed questionnaire was sent to every participant of this proposal.
A web-based questionnaire was sent to 1370 patients who had previously reported an ADR to a pharmacovigilance centre.
Using the prescription database, children and adolescents who received a psychotropic drug in the 2005-2006 period were identified and, in November 2007, a previously validated questionnaire was sent to the primary care physician (family paediatrician or general practitioner) who cared for the youth.
The email was sent from Twickenham in London, four days previously.
An Internet survey was sent to 693 Swedish environmental technology companies, previously identified and classified, with a 25% response rate.
